If you happen to get an error during your request which says "SOAP-ERROR: Encoding: Can't decode apache map, only Strings or Longs are allowd as keys", the reason seems to be the response xml using integer for keys and php failling to understand them
Here is something that worked for me (converts integer keys to strings):
<?php
class mySoap extends SoapClient
{
public function __doRequest($request, $location, $action, $version)
{
$result = parent::__doRequest($request, $location, $action, $version);
$result = str_replace('<key xsi:type="xsd:int">', '<key xsi:type="xsd:string">', $result);
return $result;
}
}
?>
